Our linting on our project is taking upwards of 4-5 minutes to run in git workflow. I thought a good optimization would be to cache the xo cache per branch and update it incrementally. That way subsequent commits will only have their linter run against that branches diff, the same way you would have it for local development.

My solution was to save the node_modules/.cache/xo-linter folder at the end of every successful run, and to restore it per branch on every subsequent run. This works fine, but the linting doesn't seem to be faster which makes me think the cache is somehow being invalidated.

I looked through the source to try and find how the cache invalidation works but I can only see code about creating a config which has the cache folder and passing that to eslint. Is this something that is caused by eslint, or any tips on how I might achieve this?